Hinge.



A. SUNDH.

HINGE.

APPLICATION FIL-En FEB. 27, m5.

Patented June 8, 1915.

Wl TIVESSES:

THE NORRIS PETERS CO.. PHOTULITHO WASHINGTON, n.

AUGUST SUNDH, OF HASTINGS-UPON-I-IUDSON, NEW' YORK.

HINGE.

Specification of Letters Patent.

Patented June 8, 1915.

Application led February 27, 1915. Serial No. 10,900.

To all wh-0m t may concern:

Be it known that I, AUGUST SUNDH, va citizen of the United States, residing in Hastings-upon-Hudson, in the county of Westchester and State of New York, have invented a new and useful Improvement in Hinges, of which the following is a specification.

My invention relates to an improvement in hinges, and particularly to that type in which the hinge is centered by a spring placed under tension when the hinge is opened.

The present device comprises members,

one stationary and one movable, one nof which carries a lubricant. These members inclose a cam member and a compression spring to center the hinge. My device is so arranged that in centering the hinge members the same will be retarded by the lubricant contained within the casing and at the same time lubricating the parts.

Referring to the drawings, Figure 1 is a sectional elevational view of the hinge; Fig. 2 is an elevational view taken at right angles to Fig. 1, and partly in section; Fig. 3 is a plan view.

Referring now to the drawings in detail, a telescopic member, 1, forms the upper part of the hinge and is secured to the gate or door by any suitable clamping means. A lower member, 2, is provided and is clamped to the object to which the supported body is to be fastened. Both members 1 and 2 are cylindrical, the member 2 being slightly smaller in diameter than the member 1, so that the two parts telescope each other. The part 1,V when the hinge is assembled lits down over the part 2 for a short distance, here shown about one third of the distance down the member 2, but in any event it should extend down far enough to prevent dust and dirt or any foreign substance entering to the interior of the hinge. A spindle, 3, is carried by the upper member 1 and extends down through the center of the hinge to the lower member 2, where it enters an opening, 4, formed in an extension, 5, formed on the bottom of the member 2. A cam member, 6, is keyed, but slidably keyed, on the spindle, 3, this cam member when the hinge is centered extending nearly to the bottom of the inside of the member 2. At all times this cam member rests on the inside of the member 2, the said member having a `cam surface formed on its interior similar to the cam member. Resting on. and

carried in a depression, 7, in the cam member, is a compression spring, 8. It is to be understood that both the` compression spring, 8, and cam member 6, surround the spindle, 3. This spring, 8, bears against a cap or cover, 9, screwthreaded into the top of the lower member 2. A passage, 10, 1s provided in the cam member, 6, this passage extending longitudinally of said member f or its entire length. A ball valve, 11, is provided in the lower end of this passage. Ir use the member 2 is partially lled with o1 The operation of the hinge may be described as follows: As the hinge is opened in either direction, the cam member, 6, by reason of it being keyed on the spindle 3, and the spindle 3 being secured in the member 1, Will be carried up the inclined face of the lower member 2; and by reason of the fact that the cam is loosely keyed to the spindle, that is it may travel longitudinally of the spindle. As the cam member is carried up the spring 8 will be compressed. When the hinge is released to return to closed position, the spring 8 by reason of it being now under compression will cause the hinge to close regardless of Whether or not the load on the hinge is heavy enough to cause the hinge to'close by gravity. This closing action of the hinge, however, is partially retarded by the ball valve, 11, as the lubricant which was displaced by the cam member 6 when the latter was raised, ran down through the passage 10 and into the space just vacated by the cam member, is now displaced by the cam member returning to its lowermost position, but by reason of the ball valve 11 will be partially restrained. It will thus be seen that not only is a perfect lubrication of the interior of the hinge insured, but also a retarding action on the return of the hinge to central or closed position.

It will be seen that I have provided a very compact and inexpensive device, and one which will be well protected by the elements at all times' and' one which will be certainly self closing, and which by reason of its perfect lubrication and the retarding action viich I have provided, should have a long I understand that others skilled in the art to which this device relates, could make various changes in the details and arrangements of parts herein shown without departing from the spirit and scope oiE the in vention, and I desire therefore not to be limited to the precise construction herein disclosed.

Vhat I claim, and desire to have secured by Letters Patent of the United States is l. In a hinge, the combination of station* ary parts and movable parts, these parts being telescopic and one being adapted to contain lubricant, coperating mechanism consisting of a central spindle, a cam member With a circular track forming right and left hand inclines converging` toward a common point, a carrier for said cam, a compression spring surrounding the spindle and interposed between the cam member and the stationary member, the cam member being loosely iitted in the stationary member, a valve member in said cam, said valve coperating With the movement of the cam member to control the lubricant and thereby governing the Working of the hinge.

2. In a hinge adapted to be manually operated from a center position to one side or the other, the combination of stationary parts and movable parts, a cam member Within said parts, a stationary carrier for said cam, central guiding means for sait parts and said cam, and a compression spring surrounding said central guiding means and interposed between the cam member and the stationary part, said spring adapted to act on the cam member and lthereby bring the hinge from one side or the other back to a central position.

8. In a hinge adapted to be manually operated from a central position to one side or the other, the combination of a stationary part, a cover for said stationary part, a spindle located in a central position relative to said part and guided therein and extendn ing through said cover, a movable part connecting with said spindle, a cam member having a circular track forming right and left hand inclines converging toward a common point, a carrier 'for said cam, a compression spring surrounding the spindle and interposed between said cam member and the cover of the stationary part, the inclines formed on the circular track of the cam member adapted to travel on the carrier and compress the spring When the hinge is main ually operated from a central position to one side or the other, said spring When compressed forcing the cam member down to initial position, thereby bringing the hinge back from one side or the other to a central position.

4. In a hinge adapted to be manually operated from a central position to one side or the other, the combination of stationary parts and movable parts, a cam member Within said parts constructed with a circular track forming right and left hand inclines eonverging` toward a common point, a stationary carrier for said cam member, central guiding means -r'or said cam member, a compression spring surrounding said central guiding means and interposed between the cam member and the stationary part, mechanism to transmit the manual operation to the cam member and thereby raise the caln member causing it to ride on the inclines on the carrier, from a central position to one side or the other, thereby to compress the spring, and lubricant Within said stationary' part operated by said cam member for controlling the action of the hinge.

5. In a hinge, the combination of a stationary member and a movable member, a cover for the stationary member, a central spindle with bearings at the bottom of the stationary member and in the cover of the sainemember, sai d spindle extending through said cover and rigidly connected With the movable member, a cam member adapted to be turned from a central position to one side or the other, and movable longitudinally of said spindle, said cam member having a circular track 'forming right and lett hand inclines converging toward a common point, and spring interposed between said cam member and the cover of the stationary member and surrounding the spindle, the action or' said spring operating to control the hinge,

6. In a hinge, the combination of a stationary member and a movable member, a cover for the stationary member, a central spindle With bearings at the bottom of the stationary member and in the cover of the same member, said spindle extending through said cover and rigidly connected with the movable member, a cam member adapted to be turned from a central position to one side or the other and movable longitudinally o said spindle, said cam member' having a circular track 'forming right and left hand inclines converging toward a common point, a spring interposed between said cam member and the cover of the stationary member and surrounding the spindle, and lubricant conlined within the stationary member', the action of the spring operating to control With the assistance of the lubricant the movement of the hinge in closing.

In testimony whereof, I have signed my name to this specication in the presence of tivo subscribing Witnesses.

AUGUST SUNDH.

TWitnesses:

VALTER C. STRANG, JAMES G. Bari-nenn.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. G. 

